阅读说明：本技术 同步转动式光纤测长装置 (Synchronous rotary optical fiber length measuring device ) 是由 李慧鹏 王已熏 冯毅 于 2019-12-19 设计创作，主要内容包括：本发明公开了一种同步转动式光纤测长装置,包括支撑架、转轴、同步电机、导电滑环和接近传感器,支撑架固定在待测摩擦轮的一侧,同步电机安装在支撑架上,转轴与同步电机的输出端连接,导电滑环安装在转轴上,接近传感器安装在导电滑环上,接近传感器与待测摩擦轮相对静止时,接近传感器在端面在待测摩擦轮上的投影为等效间隙,当待测摩擦轮转动时,等效间隙改变,接近传感器通过导电滑环给予同步电机同步转动信号。该测长装置具有结构简单可靠、可提高测量精度的优点。(The invention discloses a synchronous rotation type optical fiber length measuring device which comprises a support frame, a rotating shaft, a synchronous motor, a conductive sliding ring and a proximity sensor, wherein the support frame is fixed on one side of a friction wheel to be measured, the synchronous motor is installed on the support frame, the rotating shaft is connected with the output end of the synchronous motor, the conductive sliding ring is installed on the rotating shaft, the proximity sensor is installed on the conductive sliding ring, when the proximity sensor and the friction wheel to be measured are relatively static, the projection of the proximity sensor on the end surface of the friction wheel to be measured is an equivalent gap, when the friction wheel to be measured rotates, the equivalent gap is changed, and the proximity sensor gives synchronous rotation signals to the. The length measuring device has the advantages of simple and reliable structure and capability of improving the measuring precision.)

1. The utility model provides a synchronous rotation type optic fibre length measuring device which characterized in that: including support frame (1), pivot (2), synchronous machine (3), conductive sliding ring (4) and proximity sensor (5), one side of waiting to measure friction pulley (6) is fixed in support frame (1), synchronous machine (3) are installed on support frame (1), pivot (2) are connected with synchronous machine's (3) output, conductive sliding ring (4) are installed in pivot (2), proximity sensor (5) are installed on conductive sliding ring (4), and when proximity sensor (5) and waiting to measure friction pulley (6) relatively static, proximity sensor (5) are the equivalent clearance in the projection of terminal surface on waiting to measure friction pulley (6), and when waiting to measure friction pulley (6) and rotate, the equivalent clearance changes, and proximity sensor (5) give synchronous machine (3) synchronous rotation signal through conductive sliding ring (4).

2. The synchronous rotary fiber length measuring device of claim 1, wherein: the supporting frame (1) comprises a base (11) and a supporting cover (12), the supporting cover (12) is installed on the base (11), the synchronous motor (3) is installed on the outer side of the supporting cover (12), and the rotating shaft (2), the conductive sliding ring (4) and the proximity sensor (5) are installed on the inner side of the supporting cover (12).

3. The synchronous rotary fiber length measuring device of claim 2, wherein: vertical waist-shaped holes (121) are formed in the supporting cover (12), and the vertical waist-shaped holes (121) are fixedly connected with the base (11) through bolts (7).

4. A synchronous rotary fiber length measuring device according to any one of claims 1-3, wherein: the synchronous motor (3) is set as a stepping motor.

5. A synchronous rotary fiber length measuring device according to any one of claims 1-3, wherein: the synchronous motor (3) is set as a servo motor.

6. A synchronous rotary fiber length measuring device according to any one of claims 1-3, wherein: the synchronous motor (3) is set as a direct current motor.

Technical Field

The invention mainly relates to an optical fiber length measuring technology, in particular to a synchronous rotation type optical fiber length measuring device.

Background

With the continuous development of optical fiber technology in the civil and military fields, the accurate measurement of the length of the optical fiber plays an increasingly important role in optical fiber communication and optical fiber sensing systems. The existing optical fiber measuring devices mainly comprise a low coherence light reflection measuring instrument, an optical time domain reflectometer, an optical frequency domain reflectometer, an optical coherent domain reflection measuring instrument and the like.

In the winding process of the optical fiber ring, the length of each layer of optical fiber wound on the optical fiber ring needs to be accurately measured, and the measuring process needs to be on-line; and because the optical fiber is thin, the diameter is about 0.15mm, and the optical fiber is transparent, the optical fiber is stressed and is easy to break. Therefore, the on-line measurement method is very limited. The measuring device is not suitable for use, the measurement is inconvenient, and the measurement precision is not high.

At present, in the prior looping machine in China, the length of an optical fiber is mostly measured by using the number of winding turns of the optical fiber, and the diameter of the optical fiber and the winding radius of each layer of the optical fiber are set according to theoretical design values. In the actual looping process, due to the influence of the filler rubber, the diameter error of the optical fiber and the irregularity of the fiber arrangement, a certain error exists between the set radius and the actual radius, and therefore, the optical fiber length metering error can be caused. Because the optical fiber is transparent, small in diameter, insensitive to electromagnetism and incapable of being disconnected in the winding process, the on-line precise length measurement of the optical fiber cannot be realized by adopting the conventional length measurement and speed measurement sensor.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a synchronous rotation type optical fiber length measuring device which is simple and reliable in structure and can improve the measuring precision.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a synchronous rotary type optic fibre length measuring device, includes support frame, pivot, synchronous machine, conductive sliding ring and proximity sensor, the support frame is fixed in the one side of the friction pulley that awaits measuring, synchronous machine installs on the support frame, the pivot is connected with synchronous machine's output, conductive sliding ring installs in the pivot, proximity sensor installs on conductive sliding ring, and proximity sensor and the friction pulley that awaits measuring are when static relatively, proximity sensor is the equivalent clearance at the projection of terminal surface on the friction pulley that awaits measuring, and when the friction pulley that awaits measuring rotated, the equivalent clearance changed, and proximity sensor gave synchronous rotation signal of synchronous machine through conductive sliding ring.

As a further improvement of the above technical solution:

the supporting frame comprises a base and a supporting cover, the supporting cover is installed on the base, the synchronous motor is installed on the outer side of the supporting cover, and the rotating shaft, the conductive sliding ring and the proximity sensor are installed on the inner side of the supporting cover.

The supporting cover is provided with a vertical waist-shaped hole, and the vertical waist-shaped hole is tightly connected with the base through a bolt.

The synchronous motor is set as a stepping motor.

The synchronous motor is set as a servo motor.

The synchronous motor is set as a direct current motor.

Compared with the prior art, the invention has the advantages that:

the synchronous rotation type optical fiber length measuring device of the invention is characterized in that a plurality of through holes for reduction are uniformly distributed on a friction wheel, and the edge of any one through hole is used as a measured object of a proximity sensor. The proximity sensor is installed in parallel with the rotating shaft, when the proximity sensor and the friction wheel are relatively static (at a balance position), the projection of the end face of the induction head on the friction wheel is an equivalent gap, when the friction wheel rotates (surrounds), the projection area (equivalent gap) of the proximity sensor on the friction wheel changes, and the output voltage V is output₀And the changed voltage signal is used as a feedback signal, and the feedback voltage signal is used for controlling the positive and negative rotation, the fast rotation and the slow rotation of the synchronous motor. When the friction wheel rotates forwards, the equivalent gap is reduced, the output voltage of the proximity sensor is increased, the synchronous motor rotates forwards along with the equivalent gap, and the motor stops rotating when the equivalent gap reaches a balance position. When the friction wheel rotates reversely, the equivalent gap is enlarged, the output voltage of the proximity sensor is reduced, the synchronous motor rotates reversely, and the motor stops rotating when the equivalent gap reaches the balance position. When the synchronous motor rotates, the pulse signal number of the synchronous motor is collected or the encoder signal rotating synchronously with the synchronous motor is read to calculate the rotating angle of the motor (friction wheel), and finally the rotating angle is converted into the optical fiber linear displacement value. Because the proximity sensor needs to rotate synchronously with the synchronous motor and the friction wheel, a power supply and a signal output interface are provided for the proximity sensor through the conductive slip ring. Compared with the traditional structure, the approach of the on-line length measuring deviceThe sensor and the friction wheel form non-contact measurement, so that the friction force of the synchronous wheel is not increased, the inertia is not increased, and the measurement precision is integrally improved; the whole structure is simple and reliable.

Drawings

Fig. 1 is a schematic front view of a synchronous rotation type optical fiber length measuring device according to the present invention.

Fig. 2 is a schematic perspective view of the synchronous rotation type optical fiber length measuring device of the present invention.

Fig. 3 is a schematic perspective view (another view) of the synchronous rotation type optical fiber length measuring device of the present invention.

Fig. 4 is a control flowchart of embodiment 1 of the present invention.

Fig. 5 is a control flow chart of embodiment 2 of the present invention.

Fig. 6 is a control flow chart of embodiment 3 of the present invention.

The reference numerals in the figures denote:

1. a support frame; 11. a base; 12. a support housing; 121. a vertical kidney-shaped hole; 2. a rotating shaft; 3. a synchronous motor; 4. a conductive slip ring; 5. a proximity sensor; 6. a friction wheel to be tested; 7. and (4) bolts.

Detailed Description

The invention will be described in further detail below with reference to the drawings and specific examples.